def _ClassDef_merge_classify(lst, allGlyphses=None):
self = ot.ClassDef()
self.classDefs = classDefs = {}
allGlyphsesWasNone = allGlyphses is None
if allGlyphsesWasNone:
allGlyphses = [None] * len(lst)
classifier = classifyTools.Classifier()
for classDef, allGlyphs in zip(lst, allGlyphses):
sets = _ClassDef_invert(classDef, allGlyphs)
if allGlyphs is None:
sets = sets[1:]
classifier.update(sets)
classes = classifier.getClasses()
if allGlyphsesWasNone:
classes.insert(0, set())
for i, classSet in enumerate(classes):
if i == 0:
continue
for g in classSet:
classDefs[g] = i
return self, classes
def _ClassDef_merge_classify(lst, allGlyphs=None):
self = ot.ClassDef()
self.classDefs = classDefs = {}
classifier = classifyTools.Classifier()
for l in lst:
sets = _ClassDef_invert(l)
if allGlyphs is None:
sets = sets[1:]
else:
sets[0] = set(allGlyphs)
for s in sets[1:]:
sets[0].difference_update(s)
classifier.update(sets)
classes = classifier.getClasses()
if allGlyphs is None:
classes.insert(0, set())
for i, classSet in enumerate(classes):
if i == 0:
continue
for g in classSet:
classDefs[g] = i
return self, classes
def _Lookup_PairPosFormat2_subtables_recombine(a, b, font):
"""Combine two subtables that have the same general structure already."""
self = ot.PairPos()
self.Format = 2
self.Coverage = ot.Coverage()
self.Coverage.Format = 1
glyphs, _ = _merge_GlyphOrders(font, [v.Coverage.glyphs for v in (a, b)])
self.Coverage.glyphs = glyphs
self.Class1Count = a.Class1Count + b.Class1Count
self.ClassDef1 = ot.ClassDef()
classDefs = self.ClassDef1.classDefs = {}
offset = a.Class1Count
# First subtable overrides any possible shared glyph, so add b first.
sets = _ClassDef_invert(b.ClassDef1, allGlyphs=b.Coverage.glyphs)
for i, s in enumerate(sets):
for g in s:
classDefs[g] = i + offset
sets = _ClassDef_invert(a.ClassDef1, allGlyphs=a.Coverage.glyphs)
assert len(sets) <= offset
for i, s in enumerate(sets):
for g in s:
classDefs[g] = i
records = self.Class1Record = []
assert a.Class1Count == len(a.Class1Record)
assert b.Class1Count == len(b.Class1Record)
records.extend(a.Class1Record)
records.extend(b.Class1Record)
for name in ('Class2Count', 'ClassDef2', 'ValueFormat1', 'ValueFormat2'):
setattr(self, name, getattr(a, name))
return self
def build(self):
glyphClasses = {}
for classID, glyphs in enumerate(self.classes()):
if classID == 0:
continue
for glyph in glyphs:
glyphClasses[glyph] = classID
classDef = ot.ClassDef()
classDef.classDefs = glyphClasses
return classDef
